Top network posts

• 13 (Qt 5.4.1) This application failed to start because it could not find or load the Qt platform plugin "xcb"
• 8 Sum of binomial coefficients in Gould tables
• 7 Logic behind bitwise operators in C
• 7 Why the number of unlabeled graphs on $n$ vertices is not exactly $\frac{2^{n \choose 2}}{n!}$?
• 5 How to show $n=1+\sum_{k=1}^{n}\left\lfloor{\log_2\frac{2n-1}{2k-1}}\right\rfloor$ for every natural number $n$.
• 5 For which $N$ is it possible to arrange all whole numbers from $1$ to $N$ in such a way that every adjacent pair sums up to a Fibonacci number?
• 5 Number of couples of columns of a certain binary matrix "connecting" top and bottom
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